Weather-strip for doors.



E. YOUNGQUIST.

WEATHER STRIP FOR DOORS.

APPL'ICATION FILED JULY 21. 1914.

1,149,108. Patented Aug. 3, 1915.

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v E. YOUNGQUIST.

WEATHER STRIP FOR DOORS.

APPLICATiON FILED JULYZ. 1914.

1,149,108. Patented Aug. 3, 1915.

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To all whomiit may concern 1 1 Be it known that "I, RYOUNGQUIST,

a citizen of is the 1 United States, residing at Duluth, in the county ofSt. Louis and State of Minnesota, have invented new anduseful Improvements in l/Veathenstrips forDoors, of which the following is a specification. I l

The invention relatesto automatically operated thresholds, and more particularly to the class of weather strips for doors.

The primary object of the invention is the provision of a strip of this character'wherein on the closing of the door the saidstrip is automatically lowered to absolutely close the gap between the sill of the doorway and the lower edge of the door. I

Another object of the invention is the pro vision of a strip of this character which enables the dispensing with the old or ordinary form or style of threshold which is usually nailed to the floor and is inconvenient as it will wear out, leaving an opening for the creation of a draft therethrough, the strip being automatically controlled on the opening and closing of the door.

A further object of the invention is the provision of a strip of this character which is simple in construction, automatically operated, thoroughly reliable and efiicient in its purpose, and inexpensive in manufacture and installation.

With these and other objects in view, the invention consists in the construction, combination and arrangement of parts as will be hereinafter fully described, illustrated in the accompanying drawing, and pointed out in the claim hereunto appended.

In the drawings :Figure 1 is a fragmentary front elevation of a door frame and door, showing the strip constructed in accordance with the invention applied and in closed position. Fig. 2 is a horizontal trans-' verse sectional view through the doorway and door showing the device applied. Fig. 8 is a fragmentary sectional view on the line 33 of Fig. 2. Fig. 4 is a sectional view on the line 4-4 of Fig. 2. Fig. 5 is a perspective view of one of the housing plates for the device.

Similar reference characters indicate corresponding parts throughout the several views in the drawings.

Referring to the drawing in detail, A designates a portion of a door frame, 13 the floor sill line thereof, and C the swinging I '1 Specification of was Patent.

' and gear 13 i f wm maas fpi non noons.

. Patented Aug. 3 11915;

Application filedJ'uly 21, 1914. Serial 110,852,231.

door, whichsis of the ordinary well-known construction.

Formed in the lower edge of thedoor C is a vertical guide way 10 in which is fitted the 'adjustablesweather strip or threshold, comprising aboard or plate 11 which is slidably "fitted within the door frame 10, and has -mounted on opposite ends thereof toothed racks 12 with which respectively mesh the toothed sector 13'and gear 13 which are secured upon a single shaft 14 common thereto, the latter being journaled in bearingplates 15 secured to the door 0, the latter being cut away in its lower edge to ac commodate the shaft 14: so that the sector 13 will lie within the lower edge of the door.

Mounted on the inner face of the door C, and at the free vertical edge thereof is a facing plate 16, the same being formed at its corner with a slot 17 for receiving a stationary operating rack 18 disposed horizontally and fixed to the side of the door frame A so that its teeth will project into the path of the teeth on the rack gear 13' for operating the same during the opening and closing movements of the door for the retracting or extending of the board or plate 11 automatically, as will be apparent.

Connected to the sector 13 concentrically with respect to the shaft 14 is a member 19 to which is connected one end of a coiled retractile spring 20, the other end of which is connected to the door, and this spring serves to hold the board or plate 11 raised or elevated after the rack 18 has disengaged the gear 13' upon the opening of the door. Carried in the lower edge of the board or plate 11 is a rubber strip 21 to prevent the entrance of moisture from the outside to a room or inclosure when the board or plate 11 has been automatically lowered on the closing of the door.

In the operation of the strip or threshold when the door is opened and is being closed, the instant the stationary rack 18 engages with the gear 13' the latter is rotated and acts upon the rack bar meshing therewith, causing the board or plate 11 to be automatically lowered and to contact with the floor or sill line of the door frame when the door has been completely closed. Now,

when the door is opened the gear 13 is reable Within the cuteaway portion,

guideway in the lower edgeof the door, the spring being designed to hold 'the board or plate in its elevated positionin the guideway until the door isaga-in closed. It is of course understood that the board or plate 11 can be readily removed'from the guideway should it be desired, and $111 preferable during summer months.

From the foregoing it is. thought that the construction and manner of operation of the device will be clearly understood, and therefore a more extended explanation has been omitted.

What is claimed is I The combination with a swinging-door having'out-away portions in opposite vertioal edges at the bottom thereof, of angle .platessecured to the doorforforminghousings to the cuteaway portions, the said door being formed with a vertical slot opening at opposite ends into the cut-away portions, a threshold strip slidable in the slot, racks fixed to opposite ends of the strip and movof the-door for projecting the a toothed gear meshi g wi h one of the r ks,

; toothed segment meshing with the other rack, a" shaft supported by the door and conmating the: respective gear and segment to permit movement thereof in unison, a link pivoted to the segment, a spring fixed withone, ofthe cut-away portionsin the, door and connected With the link for exerting a pull thereon whereby the threshold strip Will be normally elevated within the slot, and a stationary abutmentraek fixed to, the door frame and disposed atright angles to thethreshold strip and also above the gear for; meshing engagement therewith and adapted to operate the latter on the closing threshold strip Withoutthe slot,

- In testimony-whereof I affix my signat re in presence of two witne ses,

EMIL YOUNGQUIST.

'witnesfies'i EMERSON,

Geni otth e pa ent may-be ob a ed: e five cen each, y addressing the -Qnni nissiener 9, Pa en s,

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